Enhance the reliability of your 6809, 6809E, 6309 or 6309E processor (all speed variants) with this simple adapter. See 6809 Pull-up Resistors.
Build instructions can be found here.
Please note this is not suitable for Tandy Coco 3 machines as these already have pull-ups as standard, and this may adversely affect rise and fall times of signals.
Please note that a normal IC socket will be supplied – NOT a turned pin version.